Use the formal grammar (use «Sie» instead of «Du»).


### Quotes

1) Convert neutral double quotes («"») and English double typographic quotes («“» and «”») to German double typographic quotes («„» and «“»). Convert neutral single quotes («'») and English single typographic quotes («‘» and «’») to German single typographic quotes («‚» and «‘»). Do NOT convert «`"» to «„», do NOT convert «"`» to «“».

Examples:

### Headings

1) Follow existing Simplified Chinese heading style (short and descriptive).
2) Do not add trailing punctuation to headings.
3) If a heading contains only the name of a FastAPI feature, do not translate it.

### Quotes and punctuation

1) Keep punctuation style consistent with existing Simplified Chinese docs (they often mix English terms like “FastAPI” with Chinese text).

2) Address the reader naturally (commonly using “你/你的”).

### Headings

1) Follow existing Traditional Chinese heading style (short and descriptive).
2) Do not add trailing punctuation to headings.

### Quotes and punctuation

1) Keep punctuation style consistent with existing Traditional Chinese docs (they often mix English terms like “FastAPI” with Chinese text).

                "type": "json_invalid",
                "loc": ["body", 1],
                "msg": "JSON decode error",
                "input": {},
                "ctx": {"error": "Expecting property name enclosed in double quotes"},
            }
        ]
    }


def test_post_form_for_json(client: TestClient):
    response = client.post("/items/", data={"name": "Foo", "price": 50.5})

    A single backtick – «`»

"triple backticks"

    Three backticks in a row – «```»

"neutral double quote"

    The character «"»
    Unicode U+0022 (QUOTATION MARK)

"neutral single quote"

    The character «'»
    Unicode U+0027 (APOSTROPHE)

"English double typographic quotes"

    The characters «“» and «”»

## 0.49.2

* Fix links in release notes. PR [#1052](https://github.com/tiangolo/fastapi/pull/1052) by [@sattosan](https://github.com/sattosan).
* Fix typo in release notes. PR [#1051](https://github.com/tiangolo/fastapi/pull/1051) by [@sattosan](https://github.com/sattosan).

def get_fields_from_routes(
    routes: Sequence[BaseRoute],
) -> list[ModelField]:
    body_fields_from_routes: list[ModelField] = []
    responses_from_routes: list[ModelField] = []
    request_fields_from_routes: list[ModelField] = []
    callback_flat_models: list[ModelField] = []
    for route in routes:
        if getattr(route, "include_in_schema", None) and isinstance(

def event_callback(event: Event):
    pass  # pragma: nocover


subrouter = APIRouter()


@subrouter.post("/invoices/", callbacks=invoices_callback_router.routes)
def create_invoice(invoice: Invoice, callback_url: Optional[HttpUrl] = None):
    """
    Create an invoice.

    This will (let's imagine) let the API user (some external developer) create an
    invoice.

@callback_router.get(
    "{$callback_url}/callback/", responses={400: {"model": CustomModel}}
)
def callback_route():
    pass  # pragma: no cover


@app.post("/", callbacks=callback_router.routes)
def main_route(callback_url: HttpUrl):
    pass  # pragma: no cover


client = TestClient(app)


def test_openapi_schema():
    response = client.get("/openapi.json")

                """
            ),
        ] = None,
        routes: Annotated[
            Optional[list[BaseRoute]],
            Doc(
                """
                **Note**: you probably shouldn't use this parameter, it is inherited
                from Starlette and supported for compatibility.

                ---

                A list of routes to serve incoming HTTP and WebSocket requests.
                """